Rincewind and Dr. Rjinswand

Rincewind is a wizard in Ankh-Morpork that earns a living through his skills at language translation. He is skinny and wears the dark red robes associated with a wizard. He also wears the bronze octagon given to students of Unseen University, the wizardry school in Discworld. Rincewind is expelled from the university after he goes into a restricted area and inadvertently memorizes one of the Eight Great Spells in the Octavo, a grimoire that once belonged to the Creator of the Universe. The spell is so powerful that Rincewind becomes unable to memorize any other spells. Rincewind's teachers attempts to extract the spell from his mind to no avail. As a result, no one is quite sure which spell Rincewind knows. During times of extreme stress, Rincewind will begin to utter the spell, but he has yet to actually use it.